Journal Article

Dissipative models of colliding stellar winds — I. Effects of thermal conduction in wide binary systems

A. V. Myasnikov and S. A. Zhekov

in Monthly Notices of the Royal Astronomical Society

Published on behalf of The Royal Astronomical Society

Volume 300, issue 3, pages 686-694
Published in print November 1998 | ISSN: 0035-8711
Published online November 1998 | e-ISSN: 1365-2966 | DOI: http://dx.doi.org/10.1111/j.1365-8711.1998.t01-1-01857.x
Dissipative models of colliding stellar winds — I. Effects of thermal conduction in wide binary systems

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Abstract

The influence of electron thermal conduction on the 2D gas dynamics of colliding stellar winds is investigated. It is shown that, as a result of the non-linear dependence of the electron thermal flux on the temperature, the pre-heating zones (in which the hot gas in the interaction region heats the cool winds in front of the shocks) have finite sizes. The dependence of the problem of the structure of the flow in the interaction region on the dimensionless parameters is studied, and a simple expression is derived for the size of the pre-heating zones at the axis of symmetry. It is shown that small values of the thermal conductivity do not suppress the Kelvin-Helmholtz instability if the adiabatic flow is subject to it. Further studies, both numerical and analytical, in this direction will be of great interest. The influence of thermal conduction on the X-ray emission from the interaction region is also estimated.

Keywords: hydrodynamics; instabilities; shock waves; binaries: general; stars: mass-loss

Journal Article.  0 words. 

Subjects: Astronomy and Astrophysics

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